What is the electronic configuration of the potassium ion (K+)?
Correct Answer: 1s2 2s2 2p6
- Step 1: Identify the atomic number of potassium (K), which is 19. This means a neutral potassium atom has 19 electrons.
- Step 2: Write the electronic configuration for a neutral potassium atom. It is 1s2 2s2 2p6 3s1.
- Step 3: Understand that the potassium ion (K+) is formed when potassium loses one electron.
- Step 4: Remove one electron from the outermost shell (3s1) of the neutral potassium configuration.
- Step 5: The new electronic configuration for K+ is now 1s2 2s2 2p6, as the 3s electron is lost.
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